Help People , I race my car yesterday, ran excellent , but for some reason started to do something totally weird , imagine that car has a bad spark plug , like working in 3 cylinders, then if you open the throttle a little bit , i goes like normal, I think it didn't lose power cause i drive it home no problem , I didn't push it hard anyways, is not afr cause my wideband reads it fine, I think is like burning oil , cause is smoking . I checked the turbo to see if that was the reason , but it's fine , I changed the spark plugs and same thing , what I notice is that I disconnected the line long time ago that goes from intake manifold to a box close to the oil pan under the intake manifold. and now from the line that comes out from the box under the intake manifold is smoking and blowing with more pressure than before, and it seems to be piston #3. ... head gasket ??? , piston broke ?? , , is running stock internals on 9psi, well tunned , dsm 450cc injectors, Apexi SAFC, AEM Wideband controller, t3/t4, external wastegate. stock ECU P30. ANY IDEAS?? thanks in advance .